Add the 2D Version of the New Unity Interface to Ubuntu 10.10 and 11.04

Howtogeek posted a guide about adding the 2D Version of the New Unity Interface to Ubuntu 10.10 and 11.04

Is your computer or virtualization software unable to display the new 3D version of the Unity Interface in Ubuntu? Now you can access and enjoy the 2D version with just a little PPA magic added to your system!To add the new PPA open the Ubuntu Software Center, go to the Edit Menu, and select Software Sources. Access the Other Software Tab in the Software Sources Window and add the first of the PPAs shown below (outlined in red). The second PPA will be automatically added to your system.